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  1. #1
    Join Date
    Mar 2005
    Posts
    1

    Question

    I am purchasing a new home and have been given the option of buying two HVAC units for the home versus the standard one system that comes with the house. The house will be approximately 3,00o square feet including the basement. There is a two story foyer so lots of interconnected space between first and second floor. I am not sure it is worth the $4,200 to get the second system. Any advice would appreciated. Thanks.

  2. #2
    Join Date
    Aug 2002
    Location
    Office and warehouse in both Crystal River & New Port Richey ,FL
    Posts
    18,836
    Two stories ,two systems,or better yet a 2 or more "zoned" system.

    Like a Carrier Infinity or other top of the line zoning system.


  3. #3
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
    Posts
    34,607
    That is a cheap price for a 2nd system. You wouldn't believe how many people around here regret trying to do a good sized house with 1 system. I'd spend that in a flash if I were you.

  4. #4
    Join Date
    Mar 2005
    Location
    burlington county n.j.
    Posts
    9,765
    2 systems or a top of the line zoning system

  5. #5
    one system with a 3 zone zoning kit.
    cheaper installation cost and lower utility and maintanence cost


  6. #6
    Join Date
    Jan 2004
    Location
    PA
    Posts
    68,789
    Zoned or 2 systems will work.
    I'd go with 2 systems myself.
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  7. #7
    Join Date
    Apr 2004
    Location
    Niantic, Illinois
    Posts
    545
    I generaly install two systems in a large home like that. Particularly when it has a open foyer or great room like yours. I throw some supplies on the ceiling of the foyer from the second floor system, supplies on the floor from the first floor system and place returns in a nearby hall or common area from both systems. This evens things out nicely. The pros and cons of 1 or 2 systems are about equal. My main point in two systems is if one goes down you always have the other one providing some comfort.

  8. #8
    Join Date
    Jan 2002
    Location
    East Grand Forks, MN
    Posts
    1,375
    option of buying two HVAC units for the home versus the standard one system.
    The house will be approximately 3,00o square feet including the basement.

    There is a two story foyer so lots of interconnected space between first and second floor.



    If no more than a 5-ton system is sufficient for the house, then there's nothing the matter with a single system.

    3,000 square ft with a basement is not big!

    Is this a split foyer or a tri-level house?




  9. #9
    Join Date
    Feb 2004
    Location
    New Mexico
    Posts
    5,737
    The advantages of two systems are:
    At night when asleep you're not cooling the whole house
    During the day your not cooling the whole house.
    When one unit runs your not bringing on a lot more horsepower than you need. EZ to balance over a large house with different loading. I wouldn't have any other way. Oh ya, and the equipment is going to last a lot longer as it's not running as much. Get some programmable t'stats so the unoccupied zones are off and you're money ahead.
    "What Fools these mortals be"....Puck

  10. #10
    Join Date
    Apr 2004
    Location
    Niantic, Illinois
    Posts
    545
    Originally posted by arc8
    option of buying two HVAC units for the home versus the standard one system.
    The house will be approximately 3,00o square feet including the basement.

    There is a two story foyer so lots of interconnected space between first and second floor.



    If no more than a 5-ton system is sufficient for the house, then there's nothing the matter with a single system.

    3,000 square ft with a basement is not big!

    Is this a split foyer or a tri-level house?



    You're right, most of the homes I do are more like 3,000 sq ft plus a finished basement, but still two systems are a good way to go. I don't argue that a single system will do the home that we are speaking of. However the installing company needs to be proficient at air distribution design and implementaton to make it function properly. Not tooting my own horn but besides myself, there is one other company in my area that has a competent design and installation team. Most of the companies around my area are "rule of thumb" guys.

  11. #11
    Join Date
    Nov 2000
    Location
    Eastern PA
    Posts
    68,981
    Two systems. Better humidity removal, better temperature control and if one goes down you have part of the house to retreat to.
    Government is a disease...
    ...masquerading as its own cure…
    Ecclesiastes 10:2 NIV


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